How to update and upgrade from ubuntu 14 to ubuntu 18?

I want update and upgrade my droplet which is on 14 to ubuntu 18 but it is failling and getting this error W: Failed to fetch HttpError404

W: Failed to fetch HttpError404

E: Some index files failed to download. They have been ignored, or old ones used instead.


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Hey friend,

You can remove that repository, which it seems had been added in on this server. This command will do that:

add-apt-repository --remove ppa:ondrej/php

That said, I highly recommend that you not upgrade this droplet. You have custom packages installed on what I’m guessing is a production system. Something is going to break. You might find that it makes more sense to create a new Ubuntu 18 droplet and migrate to it.